Chess Openings Lab
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French Defense: Advance Variation, Milner-Barry Gambit

The Milner-Barry Gambit is 6.Bd3 in the Advance French, developing the bishop and offering the d4 pawn. White gives material for fast development and an attack, while Black must decide how much to grab and when to play ...Bd7.

Moves
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Bd3
ECO
C02
Engine
+0.27 · level (Stockfish 17.1, depth 20)
Played
2,379 games in our lichess sample
White scores
52.1%

Key ideas for both sides

White

  • After 6...cxd4 the engine castles at once with 7.O-O, keeping the c3 pawn to open lines with cxd4 or Re1 later.
  • Watch the Bb5+ trick: if Black takes on d4 with knight and queen before ...Bd7, Bb5+ uncovers the d1-queen against d4.
  • Long-term, White wants Re1, Kh1 or h4, and a knight on c3 or d2 to use the open lines around Black's king.

Black

  • 6...cxd4 is the engine's choice, and 7...Bd7 next covers b5 before any capture on d4.
  • 6...a6 stops Bb5 for good, so Black can take on d4 with the knight sooner, as after 9.Kh1 Nxd4.
  • Do not play ...cxd4, cxd4, ...Nxd4, Nxd4, ...Qxd4 with the bishop still on c8: Bb5+ wins the queen.

Plans and pawn structure

If Black takes the pawn, the position opens: White's pieces swing to the kingside with Re1, Qe2 and Ng5, and Black's king often stays in the center for a while. Black wants ...Bd7, ...Nge7 and ...Ng6 or ...Nf5 to cover the kingside, plus ...Rc8 for the c-file. If Black declines with 6...Bd7, White can trade with 7.dxc5 and play a calm game with the e5 pawn as a space advantage.

What the engine plays from here

Stockfish 17.1 at depth 20 rates the position +0.27: level. Its three top choices for Black:

  1. +0.27 6...cxd4 7.O-O Bd7 8.Re1 Nge7 9.h4
  2. +0.42 6...a6 7.O-O cxd4 8.cxd4 Bd7 9.Kh1
  3. +0.50 6...Bd7 7.dxc5 Bxc5 8.O-O a5 9.Qe2

Pawns, from White's side.

How it scores on lichess

2,379 rated lichess games reached this position; White scored 52.1%.

under 120068.0%
1200–159951.2%
1600–199950.1%
2000 and up54.5%

Light: White wins. Grey: draws. Dark: Black wins. About the sample.

Traps and pitfalls

French Advance Bb5+ trap (White sets it)

In the French Advance, Black wins the d4 pawn with 7...Nxd4 and then the knight with 8...Qxd4. White answers 9.Bb5+, a check that uncovers the queen on d1 against the black queen on d4.

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The French Advance Bb5+ trap explained

Where it goes next

How to play against it

Taking the pawn is fine, but do it in the right order: 6...cxd4 and ...Bd7 before any knight capture on d4. If you are worried about the attack, 6...Bd7 or 6...a6 keeps things calmer. Never take on d4 twice while Bb5+ still lands with check.

Questions

What are the moves of the French Defense: Advance Variation, Milner-Barry Gambit?

The French Defense: Advance Variation, Milner-Barry Gambit starts 1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Bd3. Its ECO code is C02.

Is the French Defense: Advance Variation, Milner-Barry Gambit good for White?

Stockfish 17.1 rates the position +0.27 at depth 20, which is level. In 2,379 lichess games from our sample, White scored 52.1%. An aggressive gambit for White players who prefer initiative to material; Black must know the safe move order before grabbing pawns.

What is the main idea of the French Defense: Advance Variation, Milner-Barry Gambit?

White gives up the d4 pawn for fast development and open lines toward Black's king. Black can win material, but only with ...Bd7 first, since an early ...Nxd4 and ...Qxd4 runs into Bb5+.

What should Black play next?

The engine's first choice is cxd4, with a6 and Bd7 close behind. 6...cxd4 takes the pawn, and after 7.O-O Black plays 7...Bd7 to cover b5 before going for more.

Updated October 2026. Sources and method.